Kison



m. im, W. m N x de@ d o .dwf m Y Bib ` UNITED STATES PATENT OFFICE.

KENNETH JOHN MORRISON AND MICHAEL MCLELLAN, OF STELLARTON, CANADA; SAID MCLELLAN ASSIGNOR TO SAID MORRISON.

SPECIFICATION forming part of Letters Patent No. 486,732, dated November 22, 1892. Application led April 2'7\, 1891. Serial No. 390.719.. (No model.) Patented in Canada. IJanuary 8. 1891', No. 35,721. 4

To all whom it .may concern:

Be it known that we, KENNETH JOHN MOR- RIsON and MICHAEL MOLELLAN, citizens of the Dominion of Canada, residing at Stellar-v ton, in the county of Picton and Province of Nova Scotia, Canada, have jointly invented certain new and useful Improvements in Picks, (for which We have obtained a patent in Canada, No. 35,721, bearing date January 8, 1891,) of which the following isa specication.

Our invention relates to improvements in picks having inserted or interchangeable points; and the object of our improvement is out the several views.

driven nearly up to the shoulder,are made to Morses standard or such modication of the same as will best insure the points being v firmly gripped and held fast inserted and in use.

The dat e' on the end of taper on pointe enters the vertical slot, e in headof pick and prevents the point from turning. Another means for doing the same is the pin which enters a slot on the top of pick-head.

The points are loosened for taking out for changing or sharpening by driving a wedge or key into slots e e against the ends of points.

The holes o o from slot-holes e e to eye of in place when pick preventthe cracked or broken sound 

